feat: personalise <title> tag on project detail page with level and skill

[Harshada-Yele]

Summary

The project detail page <title> tag previously rendered as
Project Name — DevPath, which is functional but misses an SEO
opportunity. This PR updates the title in templates/project.html
to include the project's difficulty level and primary skill/interest
area, making pages more discoverable for users searching for specific
project ideas (e.g. "Beginner Python projects"). A Jinja2 {% if %}
guard is included to handle projects with an empty skills list safely.

Related Issue

Closes #84

Type of Change

• Bug fix — resolves a broken behaviour
• Feature — adds new functionality
• Data — adds new projects to data/projects.json
• Documentation — updates docs, README, or code comments only
• Style — CSS or visual changes only, no logic change
• Refactor — restructures code without changing behaviour
• Test — adds or updates tests

What Was Changed

File	Change made
templates/project.html	Updated <title> tag to include project.level and project.skills[0] with an {% if project.skills %} guard

How to Test This PR

1. Clone this branch: git checkout feat/personalise-project-detail-title
2. Install dependencies: pip install -r requirements.txt
3. Run the app: python app.py
4. Open http://127.0.0.1:5000 and navigate to any project detail page
5. Check the browser tab — title should now read:
   Personal Expense Tracker — Beginner Python Project | DevPath
   instead of Personal Expense Tracker — DevPath
6. Run the tests: python tests/test_basic.py

Expected test output:
27 passed, 0 failed out of 27 tests

Test Results

Before	After

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|

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Self-Review Checklist

• I have read CONTRIBUTING.md and followed all guidelines
• My branch name follows the convention: feat/personalise-project-detail-title
• I have run python tests/test_basic.py and all 27 tests pass
• I have run flake8 . locally and there are no errors
• I have not introduced any print() or console.log() debug statements
• Every new function I wrote has a docstring
• I have not modified files outside the scope of the linked issue
• If I changed the UI, I tested it at 375px (mobile) and 1280px (desktop)
• If I added a project to the dataset, it has all required JSON fields ← N/A

Notes for Reviewer

The only file changed is templates/project.html — one line. No Python
logic, no routes, no data files were touched. The {% if project.skills %}
guard ensures the title renders gracefully even if a project entry has an
empty or missing skills list.

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[Harshada-Yele]

Hi @komalharshita
Ready for review.
All 27 tests pass and before/after screenshots are included.

[komalharshita]

@Harshada-Yele kindly resolve the merge conflicts

[Harshada-Yele]

Hi @komalharshita
Merge conflicts resolved.
Ready for review.